/Engine/Source/Runtime/Engine/Public/AnimationUtils.h
Compresses the animation bones within a sequence with the chosen settings. Note: This modifies the sequence.
Returns true on success, false it we fail to compress
static bool CompressAnimBones ( [FCompressibleAnimData](API\Runtime\Engine\Animation\FCompressibleAnimData) & AnimSeq, [FCompressibleAnimDataResult](API\Runtime\Engine\Animation\FCompressibleAnimDataResult) & Target )